Venting-tool.



'No. 867,673. PATENTED OCT. 8, 1907. A. O. PEARCE. VENTING TOOL.

APPLICATION FILED MAY 14'. 1 906.

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PATENT oFFioE.

ALEXANDER O. PEARCE, OF BATON ROUGE, LOUISIANA.

VENTING-TOOL.

Specification of Letters Patent.

Patented Oct. 8, 1907.

Application filed May 14, 1906. Serial No. 316,778.

To all whom it may concern:

Be it known that I, ALEXANDER C. PEARCE, a citizen of the United States,residing at Baton Rouge, parish of East Baton Rouge, and State ofLouisiana, have invented certain new and useful Improvements inVenting-Tools for the Sand Cores of Molds, of which the following is aspecification.

This invention is a venting tool for the sand cores of molds.

. My object is the provision of a hand operable tool of extremelysimple, light, strong and durable construction which will be inexpensiveto manufacture and adapted to form a multiplicity or plurality of ventsin the sand cores of molds, particularly those that form the opening ina grate bar mold, the invention being intended to provide a meanswhereby the venting operation may be rapidly and easily accomplished toinsure the free passage of the escaping gases while the molten iron isbeing cast in the mold.

Having the foregoing object in view, the invention contemplates theprovision of a guide bar or member having a handle, and a slidablemember having tines or venting rods or wires guided by the guide bar andadapted for retraction through or projection from said guide bar by themanipulation of a handle, the guide bar being intended to be placed overthe core and the movable member operated to project the tines or ventingwires into the core, as fully set forth hereinafter.

In the accompanying drawings: Figure 1 is a face view of the'inve'ntionshowing the venting tines or wires completely retracted; Fig. 2, asimilar view showing the venting tines or wires projected; and Fig. 3, asection on line 33 of Fig. 2.

In carrying out the invention there is provided a flat, narrow guide bar1 to which is secured, or formed integral, the inclined shank 2 havinghandle 3. Secured, preferably by riveting at 4, is a guide rod 5 havinga button 6 at its upper end and extending at right angles to the guidebar 1.

The numeral 7 designates a beam or bar, through which the guide rod 5loosel-y passes at 8, permitting reciprocation of said beam or bar 7between the guide bar 1 and button 6. A handle 9 is secured to the beam7 at 10 and the rod 5 passes loosely through handle 9, saidhandleforming a convenient means for manipulating the beam or bar 7.

Secured to the beam or bar 7 are a plurality of venting tines or wires11 which lie in the same plane in parallel arrangement to each other andpass through openings 12 in the guide bar 1.

In usingthe tool, the operator grasps the handle 3 in one hand andplaces the guide bar 1 over the sand core of the mold which it isdesired to vent, the other hand previously grasping the handle 9 andretracting the beam 7 and venting tines or wires 11 to the positionshown in Fig. 1. Having thus positioned the tool for operation, the userpresses down on the handle 9 and thereby projects the venting tines 11through the openings 12 and into the sand core, thus causing amultiplicity of venting holes to be made at one stroke in the sand core.This movement is limited by the engagement of bars 7 and 12.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

In a portable hand venting tool for sand cores for molds, thecombination with a guide bar having a plurality of transverse openings,of a handle extending atan angle thereto from the central part thereof,a guide rod connected to the guide bar at the central part thereof andextending at right-angles thereto and provided with a button at itsouter end portion, a bar or beam disposed parallel to the guide bar andslidable at its eentral'portion on the guide rod, a handle connected tothe slidable bar and perforated to receive the guide rod, and ventingtines or teeth secured to the slidable bar and slidable through openingsin the guide bar.

In testimony whereof, I hereunto afiix my signature in presence of twowitnesses.

ALEXANDER C. PEARCE.

Witnesses:

M. CHAMBERS, R. FARNE.

